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2015 5th International Conference on Information Engineering for Mechanics and Materials(ICIMM 2015)

作者： Yanjun Shi Xianchao Wang Xiaojun Zheng School of Mechanical Engineering Dalian University of Technology Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education of Dalian University

Conventional engineering optimization design technology is often computational expense and highly time cost, thus we need to take approximation technique to speed up the design process and reduce design cost. We herein would introduce the close-top mill housing optimization model, take Optimal Latin Hypercube Sampling（OLHS） experimental design strategies to determine the sample, analyse the difference among EBF, RBF, Kriging surrogate model, introduce NSGA-II algorithm briefly and study the performance of method based on surrogate model and optimization algorithm.

关键词： EBF-NN RBF-NN Kriging NSGA-II Mill housing Surrogate models

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Analyzing the loading capacity of autofrettage thick cylinder with a response surface surrogate model

Analyzing the loading capacity of autofrettage thick cylinde...

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2015 5th International Conference on Information Engineering for Mechanics and Materials(ICIMM 2015)

作者： YanJun Shi Chenglong Liu XiaoJun Zheng School of Mechanical Engineering Dalian University of Technology Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education of Dalian University

The paper analyzed a steel thick cylinder, established a bilinear kinematic hardening model based on the von Mises yield criterion. We also considered the parameters of the material yield limit, the autofrettage pressure, working pressure and cylinder diameters, studied of a response surface model to predict design parameters. We firstly used the optimal Latin Hypercube method to acquire the sample points. Then, we established a response surface model with these points. We also employed cross-validation error analysis for error analysis. The results tested the feasibility of this method in solving such problems.

关键词： von Mises autofrettage pressure response surface model optimal latin hypercube

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A collision detection algorithm based on improved quantum particle swarm optimization

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WSEAS Transactions on Information Science and Applications 2014年第1期11卷 24-31页

作者： Wang, Yuanhua Zhang, Qiang Zhou, Dongsheng Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian China

In the field of virtual reality, Collision Detection Technology was widely developed for improving the performance of 3D Graphics. Following rapid growth of virtual objects with complex shapes, conventional methods perform harder to effectively detect the collision. Facing the problem, we presented a collision detection algorithm based on improved quantum particle swarm optimization. Firstly, we converted the collision detection problem into nonlinear constrained optimization problem. Secondly, we employed the Euclidean distance to evaluate whether there was collision between two objects. Then, we improved the quantum particle swarm optimization (QPSO) algorithm by (1) using quantum HΕgate and quantum rotation gate in changing quantum probability amplitude, (2) changing the mutation operator with Quantum Hadamard Gate and (3) modifying constant Inertia Weight to random inertia weight. In the end, the results of numerical simulation and analysis were provided to verify the validity of our algorithm.

关键词： Virtual reality

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Comparison study of Gauss, MQ and TPS for interpolation application

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International Journal of Industrial and Systems Engineering 2014年第2期18卷 185-198页

作者： Zhang, Qiang Zheng, Guangguo Zhou, Dongsheng Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian 116622 China

There are mainly two parts in this paper. In the first part, we briefly introduce the basic theory of the radial basis function (RBF) and its application in scattered data interpolation, and investigate the difference among three kernel functions: multi-quadric, Gauss and thin plate spline, in detail. According to the multiple examples, we make a lot of experiments, and develop a system in the C++ programme language and the OpenGL open graphics library to make simulation experiments. Finally, we analyse and summarise the different characteristics of the each kernel function in the process of interpolation. In addition, on the basis of the well-known interpolation theory and the analysis of the experimental data, we list several examples for interpolation comparisons. In the second part, the distance of the current marked points down to its most neighbouring marked points is used as shape parameter. Combining with other shape parameter for analysis and comparisons, the results represent the different influences of RBF shape parameter on the curve and surface construction. Our experiment results obtained in this article have theoretical guide values in graphic interpolation modelling. Copyright © 2014 Inderscience Enterprises Ltd.

关键词： Interpolation

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Construction and validation analysis of the transcriptional regulatory network based on the gibbs sampler strategy and cytoscape software

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Journal of Computational and Theoretical Nanoscience 2014年第2期11卷 504-510页

作者： Zhang, Qiang Zheng, Xuedong Zhou, Changjun Zhang, Qian Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

To reveal the inner control mechanism of organism is an important content in the research of bioinformatics. The proliferation of a variety of high-throughput biological data for the reconstruction of gene regulatory networks from genome scale may be provided. Because the single data source only can provide about regulation relationship one-sided information and contain noise, so a variety of biological data integration method is expected to be of high reliability control network. We use Gibbs sampling method to integrate the SGD in gene expression data with YEASTRACT in mutual regulation data to infer the transcription regulatory networks. Firstly, based on the sampling distribution method for the given transcription factor to identify their target gene set;then, combining the Outlier sum t-statistical tests calculate the polymerization evidence for given transcription factor regulation of their target gene;finally, we exploit the two step existing results identify transcription factor regulation module. The key is that we utilize the Cytoscape Software reconstructing the transcriptional regulatory networks, and the transcription regulation is found by the Gibbs sampling method, which are consistent with utilizing the Cytoscape Software reconstruct the transcriptional regulatory networks. It verifies the feasibility and accuracy of the Gibbs sampling method. At the same time, we analyze the characteristic of the biological networks. © 2014 American Scientific Publishers.

关键词： Transcription

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Time-varying stiffness analysis on rotating shaft with elliptical-front crack

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International Journal of Industrial and Systems Engineering 2014年第3期17卷 302-314页

作者： Wei, Xiaopeng Liu, Dajun Zhao, Lasheng Zhang, Qiang Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

The aim of this paper is to investigate the difference of time-varying stiffness characteristics between a semi-elliptical front crack and a straight front crack of shaft-element in order to obtain a more accurate and realistic cracked-rotor model for rotating machinery system. By calculating the correct time-varying area moments of inertia for the cross-section of cracked element and taking account the neutral axis position changes, the switching function is obtained, meanwhile the stiffness of shaft in a steady rotating cycle is determined. The result shows that a significant difference of stiffness appears as crack depth deepens. Especially, the difference between elliptical-front (EF) and straight-front (SF) cracked element is more obvious in the early crack propagation. © 2014 Inderscience Enterprises Ltd.

关键词： Cracks

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Contact-based motion graph and its application in locomotion synthesis for virtual actors

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International Journal of Industrial and Systems Engineering 2015年第1期20卷 58-68页

作者： Wei, Xiaopeng Yi, Pengfei Zhang, Qiang School of Mechanical and Engineering Dalian University of Technology Dalian116024 China Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian116622 China

To generate foot-skate free locomotion along user defined path for virtual actors, a novel data structure of contact-based motion graph is proposed. At first, sample motions are divided to contact clips according to the number of feet in contact with the ground. Then a directed graph can be built by producing nodes and basic edges based on these clips. After generating edges between nodes from different samples by linear interpolation, the contact-based motion graph can be defined as a strongly connected component of this graph. Applying synthesis strategy designed for nodes and edges, a path on contact-based motion graph can be converted to a smooth foot-skate free motion moving along the given path. The following experiments show the effectiveness of this method. Copyright © 2015 Inderscience Enterprises Ltd.

关键词： Directed graphs

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Analysis of touching sensation based on weights of rectangular object 2

Analysis of touching sensation based on weights of rectangul...

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2nd International Conference on Biomedical Engineering, ICoBE 2015

作者： Nabilah, H.E. Ali, M. Hazwan Talha, Kamil S. Farahiyah, Nor Wan, Khairunizam Hazry, D. Shahriman, A.B. Razlan, Zuradzman M. Ariffin, Mohd Asri Haslina, M. Rizon, M. Malaysia Advanced Intelligent Computing and Sustainability Research School of Mechatronic Universiti Malaysia Perlis Kampus Pauh Putra Arau Perlis02600 Malaysia School of Health Science Kampus Kesihatan Universiti Sains Malaysia Malaysia Faculty of Design Arts and Engineering Technology Universiti Sultan Zainal Abidin Malaysia

ISBN: (纸本)9781479917495

A wired glove system is developed by designing a low cost dataglove which has the similar function with the conventional dataglove and has been named as GloveMAP. The system involves the finger movements with some of grasping activities to investigate the force exerted on the fingertips during grasping a rectangular object with different weight. Force sensing resistors (FSR) are attached to the thumb, index and middle fingers to obtain the voltage changes from the activities of fingers grasping. The output data from different weight of rectangular object during grasping are analyzed based on statistical approaches. The correlation between weight and force has been determined by comparing the gradient slope between both graphs. © 2015 IEEE.

关键词： Dataglove grasping statistical approach touching sensation Grasp Force Rectangular Fingers

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DNA sequence set design by improved genetic algorithm

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Journal of Computational and Theoretical Nanoscience 2014年第3期11卷 739-743页

作者： Zhang, Qiang Zhao, Yuxia Wang, Bin Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

It has been proved that information encoding and processing in DNA is an important problem for biomolecular computing, including the encoding design problem. In recent years, there has been growing interest in the applications of DNA encoding theory in genetics and bioengineering, especially in the construction of synthetic DNA strands. In the paper, we use the improved genetic algorithm to design DNA sequences with combinational constraints including h-distance (H), hamming distance (HD) and GC-content. Furthermore, we improve the theoretical lower bounds of DNA encoding satisfying the above combinational constraints by using improved genetic algorithm, comparing our experimental results with the previous work. From the results, we can see that we succeed in obtaining more DNA sequences and give practical values satisfying h-distance, hamming distance (HD) and GC-content, and shorten the range of DNA encoding bounds. As far as we know, these results we obtain are the first time, and provide the direction for the future work such as the research of theoretical bounds of DNA encoding and algorithms Copyright © 2014 American Scientific Publishers.

关键词： Genetic algorithms

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The Liver Tumor Segmentation Benchmark (LiTS)

arXiv

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arXiv 2019年

作者： Bilic, Patrick Christ, Patrick Li, Hongwei Bran Vorontsov, Eugene Ben-Cohen, Avi Kaissis, Georgios Szeskin, Adi Jacobs, Colin Mamani, Gabriel Efrain Humpire Chartrand, Gabriel Lohöfer, Fabian Holch, Julian Walter Sommer, Wieland Hofmann, Felix Hostettler, Alexandre Lev-Cohain, Naama Drozdzal, Michal Amitai, Michal Marianne Vivanti, Refael Sosna, Jacob Ezhov, Ivan Sekuboyina, Anjany Navarro, Fernando Kofler, Florian Paetzold, Johannes C. Shit, Suprosanna Hu, Xiaobin Lipková, Jana Rempfler, Markus Piraud, Marie Kirschke, Jan Wiestler, Benedikt Zhang, Zhiheng Hülsemeyer, Christian Beetz, Marcel Ettlinger, Florian Antonelli, Michela Bae, Woong Bellver, Míriam Bi, Lei Chen, Hao Chlebus, Grzegorz Dam, Erik B. Dou, Qi Fu, Chi-Wing Georgescu, Bogdan Giró-I-Nieto, Xavier Gruen, Felix Han, Xu Heng, Pheng-Ann Hesser, Jürgen Moltz, Jan Hendrik Igel, Christian Isensee, Fabian Jäger, Paul Jia, Fucang Kaluva, Krishna Chaitanya Khened, Mahendra Kim, Ildoo Kim, Jae-Hun Kim, Sungwoong Kohl, Simon Konopczynski, Tomasz Kori, Avinash Krishnamurthi, Ganapathy Li, Fan Li, Hongchao Li, Junbo Li, Xiaomeng Lowengrub, John Ma, Jun Maier-Hein, Klaus Maninis, Kevis-Kokitsi Meine, Hans Merhof, Dorit Pai, Akshay Perslev, Mathias Petersen, Jens Pont-Tuset, Jordi Qi, Jin Qi, Xiaojuan Rippel, Oliver Roth, Karsten Sarasua, Ignacio Schenk, Andrea Shen, Zengming Torres, Jordi Wachinger, Christian Wang, Chunliang Weninger, Leon Wu, Jianrong Xu, Daguang Yang, Xiaoping Yu, Simon Chun-Ho Yuan, Yading Yue, Miao Zhang, Liping Cardoso, Jorge Bakas, Spyridon Braren, Rickmer Heinemann, Volker Pal, Christopher Tang, An Kadoury, Samuel Soler, Luc van Ginneken, Bram Greenspan, Hayit Joskowicz, Leo Menze, Bjoern Department of Informatics Technical University of Munich Germany Department of Quantitative Biomedicine University of Zurich Switzerland Ecole Polytechnique de Montréal Canada Department of Medical Imaging Radboud University Medical Center Nijmegen Netherlands Department of Biomedical Engineering Tel-Aviv University Israel Germany Pattern Analysis and Learning Group Department of Radiation Oncology Heidelberg University Hospital Heidelberg Germany Philips Research China Philips China Innovation Campus Shanghai China School of Biomedical Engineering & Imaging Sciences King0s College London London United Kingdom Institute for AI in Medicine Technical University of Munich Germany Department of Computer Science Guangdong University of Foreign Studies China Institute for diagnostic and interventional radiology Klinikum rechts der Isar Technical University of Munich Germany Institute for Diagnostic and Interventional Neuroradiology Klinikum Rechts der Isar Technical University of Munich Germany Department of Hepatobiliary Surgery The Affiliated Drum Tower Hospital Nanjing University Medical School China Department of Computing Imperial College London London United Kingdom Institute for Tissue Engineering and Regenerative Medicine Helmholtz Zentrum München Neuherberg Germany Brigham and Women's Hospital Harvard Medical School United States School of Computer Science and Engineering The Hebrew University of Jerusalem Israel University of Pennsylvania PA United States Pte. Ltd. Singapore Medical Imaging and Reconstruction Lab Department of Engineering Design Indian Institute of Technology Madras India Sensetime Shanghai China Department of Radiology Perelman School of Medicine University of Pennsylvania United States Department of Pathology and Laboratory Medicine Perelman School of Medicine University of Pennsylvania PA United States Co. Ltd China MontréalQC Canada Department of Radiology Radiation Oncology and Nuclear Medicine University of Montréal

In this work, we report the set-up and results of the Liver Tumor Segmentation Benchmark (LiTS), which was organized in conjunction with the IEEE International Symposium on Biomedical Imaging (ISBI) 2017 and the International Conferences on Medical Image computing and Computer-Assisted Intervention (MICCAI) 2017 and 2018. The image dataset is diverse and contains primary and secondary tumors with varied sizes and appearances with various lesion-to-background levels (hyper-/hypo-dense), created in collaboration with seven hospitals and research institutions. Seventy-five submitted liver and liver tumor segmentation algorithms were trained on a set of 131 computed tomography (CT) volumes and were tested on 70 unseen test images acquired from different patients. We found that not a single algorithm performed best for both liver and liver tumors in the three events. The best liver segmentation algorithm achieved a Dice score of 0.963, whereas, for tumor segmentation, the best algorithms achieved Dices scores of 0.674 (ISBI 2017), 0.702 (MICCAI 2017), and 0.739 (MICCAI 2018). Retrospectively, we performed additional analysis on liver tumor detection and revealed that not all top-performing segmentation algorithms worked well for tumor detection. The best liver tumor detection method achieved a lesion-wise recall of 0.458 (ISBI 2017), 0.515 (MICCAI 2017), and 0.554 (MICCAI 2018), indicating the need for further research. LiTS remains an active benchmark and resource for research, e.g., contributing the liver-related segmentation tasks in http://***/. In addition, both data and online evaluation are accessible via ***. © 2019, CC BY-NC-ND.

关键词： Deep learning

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